Dandelion Doom Weed Killer Concentrate Refill

Name: Dandelion Doom Weed Killer Concentrate Refill
Brand: Sunday
SKU: BWS1004
Price: 22.00 USD
Availability: InStock
Rating: 3.6 (117 reviews)

$22

5 oz. concentrate bottle Covers up to 224 sq. ft.

117 reviews

Dandelion Doom weed control concentrate 5 oz

Person applying Dandelion Doom Weed Control using Sunday pouch and sprayer

Mini bottle, major results

Iron-powered selective weed killer refill for your existing Dandelion Doom sprayer system. Controls weeds and moss without harming grass.

Free shipping! Ships in 1-2 business days

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Kill weeds with less waste

Refill your Dandelion Doom starter system for continuous weed control.

This concentrated iron-based formula is designed for your existing Sunday herbicide pouch and wand sprayer. The powerful iron (FeHEDTA) formula targets broadleaf weeds, moss, and lawn diseases while leaving your grass unharmed. It works quickly on dandelions, clover, chickweed, and many other common lawn weeds, offering a sustainable, cost-effective solution for ongoing weed management.

PRODUCT FEATURES

Lawn-safe weed killer concentrate refill
Kills broadleaf weeds, mosses, and algae in lawns
Suppresses select lawn diseases
Iron (FeHEDTA) nutrient formula
Fast acting—results within hours
Kills weeds down to the root
For use with Dandelion Doom starter kits
Treats up to 224 sq. ft.

WHAT'S INCLUDED

5 oz. bottle of iron chelated (FeHEDTA) concentrate weed killer. Designed as a refill for your existing Sunday Dandelion Doom starter kits.

INSTRUCTIONS

For best results, apply between 50-85 degrees F when no rain is expected for 3+ hours:

Pour one full bottle of Dandelion Doom into your reusable Sunday pouch and attach the sprayer
Use your outside hose to fill the pouch up to the 1-gallon mark
Secure the cap of the reusable pouch and shake well
Spray onto weeds in your lawn until leaves are entirely covered
Repeat treatment in 3-4 weeks for best results

Helpful Tips from Lawn Advisors:

How does this lawn-safe weed killer work?

Grass and weeds absorb iron differently. Weeds quickly take in too much iron, which becomes toxic and kills them. Grass absorbs iron more slowly and can tolerate higher amounts.

What weeds does Dandelion Doom control?

Effective against broadleaf weeds like black medic, plantain, thistle, chickweed, creeping buttercup, creeping charlie, dandelion, geranium sp., English daisy, false dandelion, healall, oxalis, speedwell sp/, knotweed, shepherd’s-purse, silverweed cinquefoil, white clover, wild chamomile, as well as moss, liverworts, algae and lichens.

It can also control or suppress lawn diseases: dollar spot, rust and/or snow mold.

Do I need the Dandelion Doom Starter Pack to use this product?

Yes, this is a refill concentrate only. You'll need the sprayer and pouch that come with the Dandelion Doom Starter Pack or Starter 2-Pack to apply this product.

How to use Dandelion Doom with other Sunday products?

You can apply Dandelion Doom before or after lawn fertilizer. Allow weed control products to dry completely before applying other liquid products or watering your lawn–the longer the weed control absorbs, the more effective the application.

Does Dandelion Doom stain?

Yes, it can cause staining due to high iron content. Avoid using on sidewalks or hard surfaces. If you accidentally spill, immediately spray and dilute the area. For best results, mix over grassy or landscaped areas.

Are there any US states where this is not approved for use?

This product is approved for use in all states.

Sunday Dandelion Doom Concentrate Label

Dandelion Doom Concentrate SDS

Dandelion Doom Concentrate herbicide application to dandelions in lawn

Dandelion Doom Concentrate Instructions

Ready to get to the root of your weed problem? Learn how to assemble your concentrate kit, how to apply it, and get best practices to control weeds in your lawn.

Read article

Customer reviews

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Joe P.

LocationVA

No Success

I used this product as the instructions stated but received negative results. It was 0% effective on my yard, so I’m very hesitant to try it again. I was hoping for success, but it looks like I’ll have to switch to another weed control product.

Published date

09/13/25

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Michael

Them weeds be dead

Not sure why these other people are saying it didn’t work. It killed almost all of my weeds. Did use a lot more product than expected but it killed the weeds without harming the grass.

Published date

09/06/25

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Debbie H.

Verified Reviewer

No Dead Weeds in Our Florida Lawn

This weed killer came with our lawn plan. I applied as directed, and not one weed was killed in our Florida lawn. About a month later, I bought an Ortho product, and that did the trick. Dandelion Doom is worthless.

Store Owner

Hi Debbie, thanks so much for sharing your experience with us! Our expert Yard Advisor would love to take a look at the weeds that you're treating and make recommendations on how to tackle them. You can reach them at [email protected] or by calling 415-903-6932.

Published date

09/01/25

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Rich C.

Verified Reviewer

LocationCO

Follow Instructions

Works way better than anything I’ve bought at big box stores.

Published date

08/23/25

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Justin

Verified Reviewer

Waste of Money

Should have listened to the other negative reviews before buying. Followed directions, applied in sunny/dry conditions, and even applied to a variety of different weeds. It's been two days, and every single weed is still alive and well.

Store Owner

We're sorry to hear that your Dandelion Doom results weren't as expected, Justin! Our support team would love to take a look at your weed situation and help make recommendations. You can reach them at [email protected] or by calling 415-903-6932.

Published date

08/15/25

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Jacob

Verified Reviewer

LocationLynchburg, Va

Great Product

I used this product approximately 24hrs ago on my lawn on both clover and some broad leaf weeds and I can see it working already. The weeds have already browned and are shriveling while the grass has remained healthy. I used this product with some level of skepticism after reading the other reviews ...

Published date

08/10/25

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Lori

Verified Reviewer

LocationColorado Springs, CO

Sunday Customer Service is Great

I used Dandelion Doom without success. I left a review and Sunday contacted me and worked though the issue with *and actual person*. They explained what may have happened and they sent me a different product to try after looking at pictures of the weeds in my lawn that I sent. Kudos for the advice a...

Published date

06/29/25

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Verified Reviewer

LocationColorado Springs, CO

Applied as directed. Did not kill a single weed.

Applied as directed. Did not kill a single weed. I would not use again. Very disappointed.

Store Owner

We're sorry to hear that this was your experience! It sounds like you've followed our best practices, so our expert Yard Advisor team would like to take a look at your weed situation to see what's going on. Can you send photos of your weeds to our team at [email protected] so they can help?

Published date

06/15/25

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Kami Z.

Verified Reviewer

LocationSparta, Michigan

Didn’t work

Did the 2 rounds of this and neither worked to get rid of our weeds! We did it during dandelion season too!

Store Owner

We're sorry to hear that your weed control results aren't as expected! Here are some Best Practices to follow for best results. 1.) Try to apply on a sunny day. While not mandatory, sunshine will improve the efficacy and speed of our herbicides. With sunshine unfiltered by clouds, our herbicides will work even better. A rainfall within 3 hours after application can make the herbicides ineffective. Optimal temperatures for application are between 50F to 85F. 2.) Apply when the weeds look healthy. When weeds are stressed or injured, weeds release hormones to recover. These hormones make herbicides less effective. Hormones are also released if weeds are mowed; we recommend not applying on the same day you mow. 3.) Apply the leaves liberally. Our herbicides just need to make contact with the leaves to work; trying to apply to the roots won't be effective. For best results, you want the leaves soaked, but not to the point where the herbicides is dripping off the leaves. 4.) Know the age of the weed. Older and established weeds will likely require more applications. For older weeds, we recommend doing multiple applications on the same day; just let the leaves dry out in-between applications.

Published date

06/02/25

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Greg D.

Verified Reviewer

LocationMadison, WI

Does not kill dandelions or creeping charlie

I had high hopes that this would work on dandelions and creeping charlie. It did not. Dandelions do wilt, but simply return. Creeping charlie was barely affected. Back to herbicides, unfortunately.

Store Owner

Published date

05/16/25

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